EP1001408A3 - Magnetplattensubstrat und Magnetplatte welche dieses verwendet - Google Patents
Magnetplattensubstrat und Magnetplatte welche dieses verwendet Download PDFInfo
- Publication number
- EP1001408A3 EP1001408A3 EP00100444A EP00100444A EP1001408A3 EP 1001408 A3 EP1001408 A3 EP 1001408A3 EP 00100444 A EP00100444 A EP 00100444A EP 00100444 A EP00100444 A EP 00100444A EP 1001408 A3 EP1001408 A3 EP 1001408A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic disc
- same
- substrate
- disc substrate
- norbornene resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73937—Substrates having an organic polymer comprising a ring structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59633—Servo formatting
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30027993 | 1993-11-30 | ||
JP30027893 | 1993-11-30 | ||
JP30027893A JPH07153060A (ja) | 1993-11-30 | 1993-11-30 | 磁気ディスク基板およびこれを用いた磁気ディスク |
JP30027993 | 1993-11-30 | ||
JP2247694 | 1994-02-21 | ||
JP2247694A JPH07210855A (ja) | 1993-11-30 | 1994-02-21 | 磁気ディスク基板およびこれを用いた磁気ディスク |
EP94118700A EP0655734B1 (de) | 1993-11-30 | 1994-11-28 | Magnetplattensubstrat und Magnetplatte welche dieses verwendet |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94118700.7 Division | 1994-11-28 | ||
EP94118700A Division EP0655734B1 (de) | 1993-11-30 | 1994-11-28 | Magnetplattensubstrat und Magnetplatte welche dieses verwendet |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1001408A2 EP1001408A2 (de) | 2000-05-17 |
EP1001408A3 true EP1001408A3 (de) | 2000-06-14 |
EP1001408B1 EP1001408B1 (de) | 2002-04-24 |
Family
ID=27283857
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94118700A Expired - Lifetime EP0655734B1 (de) | 1993-11-30 | 1994-11-28 | Magnetplattensubstrat und Magnetplatte welche dieses verwendet |
EP00100444A Expired - Lifetime EP1001408B1 (de) | 1993-11-30 | 1994-11-28 | Magnetplattensubstrat und Magnetplatte unter Verwendung desselben |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94118700A Expired - Lifetime EP0655734B1 (de) | 1993-11-30 | 1994-11-28 | Magnetplattensubstrat und Magnetplatte welche dieses verwendet |
Country Status (4)
Country | Link |
---|---|
US (1) | US5585989A (de) |
EP (2) | EP0655734B1 (de) |
KR (1) | KR100348968B1 (de) |
DE (2) | DE69430494T2 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6424479B1 (en) * | 1995-01-20 | 2002-07-23 | Sony Corporation | Magnetic disk having address information in a form which represents grey code between neighboring recording tracks and a reproducing apparatus therefor |
JPH0935407A (ja) * | 1995-07-20 | 1997-02-07 | Hitachi Ltd | 磁気ディスク装置 |
US6104579A (en) * | 1996-04-11 | 2000-08-15 | Sony Corporation | Magnetic disk head having data zone and control signal zones which generate different lifts when flown over by a head slider |
TW342495B (en) | 1996-07-22 | 1998-10-11 | Matsushita Electric Ind Co Ltd | Master information carrier, method of producing the same, and method for recording master information signal on magnetic recording medium |
EP0858070B1 (de) * | 1996-08-23 | 2005-12-28 | Sony Corporation | Herstellungsverfahren für ein plattenmediumsubstrat |
DE69739255D1 (de) * | 1996-10-16 | 2009-03-26 | Ricoh Kk | Mehrfarbenbilderzeugungsverfahren unter Verwendung eines Zwischenüberträgerbandes und zugehörige Vorrichtung |
JPH11161944A (ja) * | 1997-11-27 | 1999-06-18 | Sony Corp | 磁気ディスク及び磁気ディスク装置 |
US6359747B1 (en) | 1998-02-10 | 2002-03-19 | Seagate Technology Llc | Hard disk patterning |
JP3329259B2 (ja) | 1998-03-20 | 2002-09-30 | 松下電器産業株式会社 | マスター情報担体、および、磁気記録媒体の製造方法 |
JP3361740B2 (ja) | 1998-03-23 | 2003-01-07 | 松下電器産業株式会社 | マスター情報磁気記録装置及び磁気記録媒体の製造方法 |
US6764734B2 (en) * | 1998-05-19 | 2004-07-20 | Seagate Technology Llc | High modulus and high damping plastic composite disc substrate for improved servo control by injection and co-injection molding |
US6714367B1 (en) | 1998-10-29 | 2004-03-30 | Matsushita Electric Industrial Co., Ltd. | Master information medium and method of master information recording |
JP2002536778A (ja) | 1999-02-12 | 2002-10-29 | ゼネラル・エレクトリック・カンパニイ | データ記憶媒体 |
US6490117B1 (en) * | 1999-03-26 | 2002-12-03 | Seagate Technology Llc | Method of thermally printing servo patterns on magnetic media |
US6490111B1 (en) | 1999-08-25 | 2002-12-03 | Seagate Technology Llc | Method and apparatus for refreshing servo patterns in a disc drive |
JP2002037866A (ja) * | 2000-07-25 | 2002-02-06 | Fuji Electric Co Ltd | 熱可塑性ノルボルネン系樹脂の乾燥方法、この樹脂を使用した磁気記録媒体用基板およびこの基板を用いた磁気記録媒体、並びにこの磁気記録媒体の製造方法 |
EP1316947A4 (de) * | 2000-09-04 | 2005-03-30 | Zeon Corp | Magnetplattensubstrat und magnetplatte |
KR20020086291A (ko) * | 2001-05-11 | 2002-11-18 | 후지 샤신 필름 가부시기가이샤 | 자기전사용 마스터담체 |
US6738205B1 (en) | 2001-07-08 | 2004-05-18 | Maxtor Corporation | Self-writing of servo patterns in disk drives |
US6757116B1 (en) * | 2001-08-16 | 2004-06-29 | Seagate Technology Llc | Disk biasing for manufacture of servo patterned media |
US7684152B2 (en) * | 2004-09-24 | 2010-03-23 | Wd Media, Inc. | Method of mitigating eccentricity in a disk drive with DTR media |
JP2007066390A (ja) * | 2005-08-30 | 2007-03-15 | Konica Minolta Opto Inc | 磁気記録媒体用基板、及び磁気記録媒体用基板の製造方法 |
US7612961B2 (en) * | 2007-10-12 | 2009-11-03 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning |
US7924519B2 (en) * | 2008-09-29 | 2011-04-12 | Wd Media, Inc. | Eccentricity determination for a disk |
JP2013033577A (ja) | 2011-07-01 | 2013-02-14 | Ntn Corp | 記録ディスク駆動装置およびその樹脂部品 |
RU2556427C1 (ru) * | 2014-03-24 | 2015-07-10 | Открытое акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (ОАО "НПП "Исток им. Шокина") | Аттенюатор свч |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026024A (ja) * | 1983-07-21 | 1985-02-08 | Nippon Zeon Co Ltd | 光学材料 |
EP0155452A1 (de) * | 1984-01-26 | 1985-09-25 | Daicel Chemical Industries, Ltd. | Optischer Plattenträger aus Polycarbonat mit einem breiten Durchmesser, Verfahren zu seiner Herstellung und Form dafür |
EP0542176A2 (de) * | 1991-11-14 | 1993-05-19 | Hoechst Aktiengesellschaft | Magnetooptisches Aufzeichnungsmedium |
JPH05282702A (ja) * | 1992-03-18 | 1993-10-29 | Kuraray Co Ltd | 情報信号記録媒体の基板 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4738885A (en) * | 1986-02-24 | 1988-04-19 | Kyocera Corporation | Magnetic disk, substrate therefor and process for preparation thereof |
US5191026A (en) * | 1987-12-25 | 1993-03-02 | Nippon Zeon Co., Ltd. | Ring-opening hydrogenated copolymer and process for producing the same |
EP0657884B1 (de) * | 1989-01-11 | 1998-09-02 | Hitachi, Ltd. | Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten, magnetischer Auzeichnungsträger, sein Herstellungsverfahren und Gerät zur magnetischen Aufzeichnung |
JP2729317B2 (ja) * | 1989-06-10 | 1998-03-18 | 日本ゼオン株式会社 | 光ディスク |
JPH04218557A (ja) * | 1990-04-13 | 1992-08-10 | Nippon Zeon Co Ltd | 熱可塑性飽和ノルボルネン系ポリマー成形品 |
US5247612A (en) * | 1990-06-29 | 1993-09-21 | Radius Inc. | Pixel display apparatus and method using a first-in, first-out buffer |
US5379171A (en) * | 1991-09-25 | 1995-01-03 | Integral Peripherals | Microminiature hard disk drive |
JPH05234074A (ja) * | 1992-02-21 | 1993-09-10 | Tdk Corp | 磁気ディスクの製造方法および磁気ディスク |
JP3254743B2 (ja) * | 1992-08-17 | 2002-02-12 | ソニー株式会社 | 位置決め信号の書き込み方法 |
-
1994
- 1994-11-23 US US08/347,086 patent/US5585989A/en not_active Expired - Lifetime
- 1994-11-28 EP EP94118700A patent/EP0655734B1/de not_active Expired - Lifetime
- 1994-11-28 DE DE69430494T patent/DE69430494T2/de not_active Expired - Fee Related
- 1994-11-28 DE DE69425414T patent/DE69425414T2/de not_active Expired - Fee Related
- 1994-11-28 EP EP00100444A patent/EP1001408B1/de not_active Expired - Lifetime
- 1994-11-29 KR KR1019940031624A patent/KR100348968B1/ko not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026024A (ja) * | 1983-07-21 | 1985-02-08 | Nippon Zeon Co Ltd | 光学材料 |
EP0155452A1 (de) * | 1984-01-26 | 1985-09-25 | Daicel Chemical Industries, Ltd. | Optischer Plattenträger aus Polycarbonat mit einem breiten Durchmesser, Verfahren zu seiner Herstellung und Form dafür |
EP0542176A2 (de) * | 1991-11-14 | 1993-05-19 | Hoechst Aktiengesellschaft | Magnetooptisches Aufzeichnungsmedium |
JPH05282702A (ja) * | 1992-03-18 | 1993-10-29 | Kuraray Co Ltd | 情報信号記録媒体の基板 |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 8512, Derwent World Patents Index; AN 85-071721, XP002133234 * |
DATABASE WPI Week 9348, Derwent World Patents Index; AN 93-380412, XP002133235 * |
Also Published As
Publication number | Publication date |
---|---|
EP0655734A1 (de) | 1995-05-31 |
US5585989A (en) | 1996-12-17 |
EP1001408B1 (de) | 2002-04-24 |
DE69425414D1 (de) | 2000-09-07 |
DE69430494D1 (de) | 2002-05-29 |
EP0655734B1 (de) | 2000-08-02 |
EP1001408A2 (de) | 2000-05-17 |
DE69425414T2 (de) | 2001-01-25 |
DE69430494T2 (de) | 2002-11-14 |
KR100348968B1 (ko) | 2003-01-08 |
KR950015219A (ko) | 1995-06-16 |
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